All-terrain four-wheeler

Abstract

The utility model relates to the technical field of vehicles and all terrains, in particular to an all-terrain four-wheeler which comprises a handlebar steering assembly, a steering connecting rod assembly, a front suspension assembly, a rear suspension assembly, a main frame assembly, an auxiliary frame assembly, a seat assembly, a battery box assembly and a wheel assembly. The steering connecting rod assembly is connected with the front suspension steering block through a steering shaft, the front suspension assembly and the rear suspension assembly are installed at the front end and the rear end of the main frame assembly respectively, the auxiliary frame assembly is installed over the rear end of the main frame assembly, the saddle assembly is arranged above the auxiliary frame assembly, the battery box assembly is arranged at the bottom of the main frame assembly, and the wheel assemblies are installed on a front suspension arm and a rear suspension arm respectively. And the vehicle is independently driven to run by an internal hub motor. The device is made of high-strength aluminum alloy, and is light in weight and high in impact resistance; the vehicle body structure is simple, optimal weight distribution is achieved, the center of gravity is lowered, stability is improved, instantaneous torque is provided by a motor, maneuverability is improved, noise and environmental pollution are reduced, and transportation and loading are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of mountain vehicles, in particular to an all-terrain four-wheel vehicle. Background Art

[0002] All-terrain four-wheel vehicles are vehicles used for non-road driving. They have good mobility and transportation capacity and are widely used in agriculture, forestry, firefighting, outdoor leisure and entertainment, military operations, special terrain and other fields. With the continuous development of the economic situation and the continuous improvement of living consumption levels in various regions, all-terrain four-wheel vehicles have gradually extended to leisure and entertainment, competitions, daily life and specific fields. At present, although traditional all-terrain vehicles have strong performance, they also have many shortcomings. Limited by the design of the body structure, the existing all-terrain vehicles are heavy and large in size, with high manufacturing costs and high prices. They are not convenient for daily maintenance, and gasoline all-terrain vehicles have loud engines that pollute the air. In view of the above situation, it is becoming increasingly important to study an all-terrain four-wheel vehicle with a simple structure, firm and durable, light and compact, easy to transport cargo, and pure electric new energy. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the invention of the utility model is to provide an all-terrain four-wheel vehicle with the characteristics of simple structure, firmness and durability, lightness and compactness, energy saving and consumption reduction, convenient transportation of loads, and meeting market demand.

[0004] To achieve the above-mentioned purpose, the utility model includes a handlebar steering assembly, a steering link assembly, a front suspension assembly, a rear suspension assembly, a main frame assembly, a sub-frame assembly, a seat assembly, a battery box assembly, and a wheel assembly;

[0005] The handlebar steering assembly is fixedly connected to the front suspension steering block through a steering shaft, and the steering link assembly is fixedly connected to the front suspension steering block through a steering shaft; the front suspension assembly and the rear suspension assembly are fixedly connected to the front and rear ends of the main frame assembly respectively; the sub-frame assembly is fixed just above the rear end of the main frame; the seat assembly is fixed above the sub-frame assembly; the battery box assembly is fixed at the bottom of the main frame assembly; the wheel assemblies are respectively installed on the front and rear suspension arms, and are independently driven by the hub motors installed inside.

[0006] Furthermore, the handlebar steering assembly includes a handlebar tube, a handlebar fixing block, a handlebar rod, a protective rod, a folding assembly, a steering shaft, and a throttle turning handle device; a handlebar fixing block is installed on the top of the handlebar tube, the handlebar rod and the protective rod are fixed on both sides of the handlebar fixing block, and a throttle turning handle device is installed on the handlebar rod; the bottom of the handlebar tube is connected to the folding assembly, and the folding assembly is connected to the steering shaft.

[0007] Furthermore, the steering linkage assembly includes a left steering arm, a right steering arm, a hexagonal linkage assembly, a tie rod assembly, and a steering connecting block; the left steering arm is fixedly connected to the left end of the front suspension cantilever, and the right steering arm is fixedly connected to the right end of the front suspension cantilever. A hexagonal linkage assembly is installed between the left steering arm and the right steering arm, and fisheye bearings are installed at both ends of the hexagonal linkage assembly. One end of the right steering arm is also connected to the steering connecting block via the tie rod assembly, and fisheye bearings are provided at both ends of the tie rod assembly. The steering connecting block is connected to the steering shaft; the fisheye bearing is an externally threaded self-lubricating rod end joint bearing.

[0008] Furthermore, the front suspension assembly includes a front suspension cantilever, a front suspension upper plate, a front suspension lower plate, a rubber pier, left and right kingpin shaft assemblies, a shock-absorbing link, a shock absorber, and a front suspension steering block; the middle portion of the front suspension cantilever is connected to the front suspension lower plate via bolts, a front suspension upper plate is provided above the front suspension lower plate, fixing slots for the rubber pier are provided on the front suspension upper plate and the front suspension lower plate, the rubber pier installed between the slots is fixedly connected to the front suspension upper plate and the front suspension lower plate via bolts, a steering block is installed above the front end of the front suspension upper plate, and the rear portion of the front suspension cantilever is connected to the shock-absorbing link and the shock absorber.

[0009] Furthermore, the rear suspension assembly includes a rear suspension cantilever, a rear suspension base plate 1, a rear suspension base plate 2, a rear suspension base plate 3, a rear suspension upper hinge seat, and a spring shock absorber; the front end of the rear suspension cantilever is connected to the rear suspension base plate 1 via bolts, the rear suspension cantilever and the rear suspension base plate 1 are provided with fixing grooves for rubber piers, the rubber piers installed between the grooves are fixedly connected to the rear suspension cantilever and the rear suspension base plate 1 via bolts, the rear end of the rear suspension base plate 2 is spliced ​​together with the rear suspension base plate 3, the rear suspension upper hinge seat is installed at the bottom of the rear suspension base plate 1, and a spring shock absorber is installed between the rear suspension upper hinge seat and the rear suspension cantilever.

[0010] Furthermore, the main frame assembly includes a main frame, an anti-skid plate, a battery box fixing frame, and a sub-frame support frame; an anti-skid plate is installed at the bottom of the main frame, a battery box fixing frame is installed inside the main frame, and sub-frame support frames are installed on both sides of the rear end of the main frame.

[0011] Furthermore, the seat assembly includes a seat base, a seat rod, and a seat; the seat base is fixed on the sub-frame assembly, the bottom of the seat rod is inserted into the seat base and fixed by hand-tightened bolts, and the seat is installed on the top of the seat rod.

[0012] Furthermore, the wheel assembly includes a wheel, a hub motor, and a brake disc; the hub motor is installed on the inner side of the wheel, and the brake disc is installed on the outer side of the hub motor shaft; the hub motor is connected to the main controller of the battery box assembly.

[0013] Furthermore, the handlebar steering assembly, steering link assembly, front suspension assembly, rear suspension assembly, main frame assembly, and sub-frame assembly are made of high-strength aluminum alloy.

[0014] Furthermore, the battery box assembly includes a battery box, a ternary lithium battery, a main controller, and a top pedal; through holes are provided on the front and rear walls of the battery box, and a ternary lithium battery is installed inside. The front of the ternary lithium battery is connected to the main controller, and the main controller is connected to the hub motor driver control line and the throttle control line on the steering assembly.

[0015] Compared with the prior art, the beneficial effects of the utility model are: providing an all-terrain four-wheel vehicle, the body of which is made of high-strength aluminum alloy, which greatly reduces the weight of the entire vehicle; the design structure of the entire vehicle is simple, achieving optimal weight distribution, lowering the center of gravity, and improving stability; the all-terrain vehicle uses pure electric new energy to provide instantaneous torque and provide faster acceleration power; the body is small, pollution-free and low in noise, making it easy to transport loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the handlebar steering assembly structure.

[0019] Figure 3 for Figure 1 Schematic diagram of the steering linkage assembly structure.

[0020] Figure 4 for Figure 1 Schematic diagram of the front suspension structure.

[0021] Figure 5 for Figure 1 Schematic diagram of the rear suspension structure.

[0022] Figure 6 for Figure 1 Schematic diagram of the main frame assembly structure.

[0023] Figure 7 for Figure 1 Schematic diagram of the seat assembly structure.

[0024] Figure 8 for Figure 1 Schematic diagram of the battery box assembly structure.

[0025] Fig. 9 for Figure 1Schematic diagram of the wheel assembly structure.

[0026] As shown in the figure: 1. Handlebar steering assembly, 2. Steering connecting rod assembly, 3. Front suspension assembly, 4. Rear suspension assembly, 5. Main frame assembly, 6. Subframe assembly, 7. Seat assembly, 8. Battery box assembly, 9. Wheel assembly, 101. Handlebar tube, 102. Handlebar fixing block, 103. Handlebar rod, 104. Protective rod, 105. Folding assembly, 106. Steering shaft, 107. Throttle handlebar device, 201. Left steering arm, 202. Right steering arm, 203. Hexagonal connecting rod assembly, 204. Tie rod assembly, 205. Steering connecting block, 301. Front suspension cantilever, 302. Front suspension upper plate, 303. Front suspension lower plate, 304. Rubber pier, 3 05. Left and right kingpin shaft assemblies, 306. shock absorber connecting rod, 307. shock absorber, 308. front suspension steering block, 401. rear suspension cantilever, 402. rear suspension substrate one, 403. rear suspension substrate two, 404. rear suspension substrate three, 405. rear suspension upper hinge seat, 406. spring shock absorber, 501. main frame, 502. anti-skid plate, 503. battery box fixing frame, 504. subframe support frame, 701. seat base, 702. seat rod, 703. seat, 801. battery box, 802. ternary lithium battery, 803. main controller, 804. top pedal, 901. wheel, 902. hub motor, 903. brake disc. DETAILED DESCRIPTION

[0027] In order to make the invention purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the utility model includes a handlebar steering assembly 1, a steering link assembly 2, a front suspension assembly 3, a rear suspension assembly 4, a main frame assembly 5, a sub-frame assembly 6, a seat assembly 7, a battery box assembly 8, and a wheel assembly 9;

[0029] The handlebar steering assembly 1 is fixedly connected to the front suspension steering block 308 via the steering shaft 106, and the steering link assembly 2 is fixedly connected to the front suspension steering block 308 via the steering shaft 106; the front suspension assembly 3 and the rear suspension assembly 4 are respectively fixedly connected to the front and rear ends of the main frame assembly 5; the sub-frame assembly 6 is fixed directly above the rear end of the main frame 501; the seat assembly 7 is fixed above the sub-frame assembly 6; the battery box assembly 8 is fixed at the bottom of the main frame assembly 5; the wheel assembly 9 is respectively installed on the front and rear suspension arms, and is independently driven by four hub motors.

[0030] Preferably, the handlebar steering assembly 1 includes a handlebar tube 101, a handlebar fixing block 102, a handlebar rod 103, a protective rod 104, a folding assembly 105, a steering shaft 106, and a throttle turning device 107; the handlebar fixing block 102 is installed on the top of the handlebar tube 101, the handlebar rod 103 and the protective rod 104 are fixed on both sides of the handlebar fixing block 102, and the throttle turning device 107 is installed on the handlebar rod 103; the bottom of the handlebar tube 101 is connected to the folding assembly 105, and the folding assembly 105 is connected to the steering shaft 106. The folding assembly 105 is provided with a hand-tightening bolt, which can make the handlebar fold flat for easy carrying. When the driver holds the handlebar tube 101 and turns the direction, the handlebar tube 101 drives the steering connection block 205 of the steering link assembly 2 on the steering shaft to rotate, thereby driving the steering link assembly 2 to rotate and controlling the wheel swing.

[0031] Preferably, the steering linkage assembly 2 includes a left steering arm 201, a right steering arm 202, a hexagonal linkage assembly 203, a tie rod assembly 204, and a steering connecting block 205; the left steering arm 201 is fixedly connected to the left end of the front suspension cantilever 301, the right steering arm 202 is fixedly connected to the right end of the front suspension cantilever 301, the left steering arm 201 and the right steering arm 202 are connected, a hexagonal linkage assembly 203 is installed between the left steering arm 201 and the right steering arm 202, fisheye bearings are installed at both ends of the hexagonal linkage assembly 203, one end of the right steering arm 202 is also connected to the steering connecting block 205 via the tie rod assembly 204, fisheye bearings are provided at both ends of the tie rod assembly 204, and the steering connecting block 205 is connected to the bottom of the steering shaft 106; the fisheye bearing is an external threaded self-lubricating rod end joint bearing. The fisheye bearing of the present application is a bidirectional bearing, which is composed of a central sphere and two annular tracks, that is, the sphere between the two bearing rings distributes the load on the contact surface between the ball and the ring, thereby reducing friction and resistance, and achieving precise and smooth rotation. Its advantages are strong load bearing capacity, high precision, and low friction loss. This steering system realizes the free rotation of each component through the fisheye bearing steering rod, reduces friction during steering, and enables the driver to control the steering angle of the vehicle more accurately.

[0032] Preferably, the front suspension assembly 3 includes a front suspension cantilever 301, a front suspension upper plate 302, a front suspension lower plate 303, a rubber pier 304, left and right kingpin shaft assemblies 305, a shock absorbing link 306, a shock absorber 307, and a front suspension steering block 308; the middle part of the front suspension cantilever 301 is connected to the front suspension lower plate 303 by bolts, the front suspension upper plate 302 is arranged above the front suspension lower plate 303, the front suspension upper plate 302 and the front suspension lower plate 303 are provided with fixing notches for the rubber pier 304, the rubber pier 304 installed between the notches is fixedly connected to the front suspension upper plate 302 and the front suspension lower plate 303 by bolts, a steering block 308 is installed above the front end of the front suspension upper plate 302 for connecting the handlebar steering assembly 2, and the rear end of the front suspension cantilever 301 is connected to the shock absorbing link 306 and the shock absorber 307. The left and right sides of the front end of the front suspension cantilever 301 are connected to the left and right kingpin shaft assemblies 305, and the left and right kingpin shaft assemblies 305 are used to connect the left and right wheels at the front end. When the vehicle passes through an uneven road surface or encounters a sudden impact, the rubber pier 304 will compress and deform to absorb the impact force of the road. The shock absorber 307 absorbs and dissipates the impact force from the road through the movement of the damper and piston in its internal structure, providing smooth driving and stable suspension.

[0033] Preferably, the rear suspension assembly 4 includes a rear suspension cantilever 401, a rear suspension base plate 1 402, a rear suspension base plate 2 403, a rear suspension base plate 3 404, a rear suspension upper hinge seat 405, and a spring shock absorber 406; the front end of the rear suspension cantilever 401 is connected to the rear suspension base plate 1 402 by bolts, the rear suspension cantilever 401 and the rear suspension base plate 1 402 are provided with fixing slots for the rubber pier 304, the rubber pier 304 installed between the slots is fixedly connected to the rear suspension cantilever 401 and the rear suspension base plate 1 402 by bolts, the rear end of the rear suspension base plate 2 403 is spliced ​​together with the rear suspension base plate 3 404, the rear suspension upper hinge seat 405 is installed at the bottom of the rear suspension base plate 1 402, and the spring shock absorber 406 is installed between the rear suspension upper hinge seat 405 and the rear suspension cantilever 401. The rear suspension assembly 4 absorbs road vibrations and bumps through high-performance shock absorbers, and can share the weight of the rear of the vehicle so that the load on the wheels is evenly distributed, reducing the tilt and instability of the vehicle body.

[0034] Preferably, the main frame assembly 5 includes a main frame 501, an anti-skid plate 502, a battery box fixing frame 503, and a sub-frame support frame 504; an anti-skid plate 502 is installed at the bottom of the main frame 501, a battery box fixing frame 503 is installed inside the main frame 501, and sub-frame support frames 504 are installed on both sides of the rear end of the main frame 501 for connecting and supporting the sub-frame assembly 6, and the sub-frame can also be equipped with a storage basket for transporting and storing items.

[0035] Preferably, the seat assembly 7 includes a seat base 701, a seat rod 702, and a seat 703; the seat base 701 is fixed to the sub-frame assembly 6 and is provided with hand bolts; the bottom of the seat rod 702 is inserted into the seat base 701 and is fixed by hand bolts, which can adjust the height of the seat 703 and are also convenient for disassembly and installation; the seat 703 is installed on the top of the seat rod 702.

[0036] Preferably, the wheel assembly 9 includes a wheel 901, a hub motor 902, and a brake disc 903; the hub motor 902 is installed inside the wheel 901, and the brake disc 903 is installed outside the hub motor 902 shaft; the hub motor 902 is connected to the master controller of the battery box assembly 8. The wheel 901 adopts a large-diameter hub with a high ground clearance, which can increase the ability to pass road obstacles, and the four wheels are equipped with hub motors 902, which provide better traction and handling performance, and improve the ability to pass all terrains.

[0037] Preferably, the handlebar steering assembly 1, the steering link assembly 2, the front suspension assembly 3, the rear suspension assembly 4, the main frame assembly 5, and the sub-frame assembly 6 are made of high-strength aluminum alloy, which increases the strength of the entire vehicle body and reduces the weight.

[0038] Preferably, the battery box assembly 8 comprises a battery box 801, a ternary lithium battery 802, a master controller 803, and a top pedal 804; through holes are provided on the front and rear walls of the battery box 801, and a ternary lithium battery 802 is installed inside, and a master controller 803 is connected to the front of the ternary lithium battery 802, and the master controller 803 is connected to the wheel hub motor driver control line and the throttle control line on the steering assembly. The master controller 803 is a PLC programmable controller.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An all-terrain four-wheel vehicle, characterized in that: The vehicle comprises a handlebar steering assembly (1), a steering link assembly (2), a front suspension assembly (3), a rear suspension assembly (4), a main frame assembly (5), a sub-frame assembly (6), a seat assembly (7), a battery box assembly (8), and a wheel assembly (9); The handlebar steering assembly (1) is fixedly connected to the front suspension steering block (308) via a steering shaft (106), and the steering link assembly (2) is fixedly connected to the front suspension steering block (308) via a steering shaft (106); the front suspension assembly (3) and the rear suspension assembly (4) are respectively fixedly connected to the front and rear ends of the main frame assembly (5); the sub-frame assembly (6) is fixed just above the rear end of the main frame (501); the seat assembly (7) is fixedly arranged above the sub-frame assembly (6); the battery box assembly (8) is fixedly arranged at the bottom of the main frame assembly (5); and the wheel assemblies (9) are respectively mounted on the front and rear suspension arms and are independently driven for travel by wheel hub motors installed inside.

2. An all-terrain four-wheel vehicle according to claim 1, characterized in that: The handlebar steering assembly (1) comprises a handlebar tube (101), a handlebar fixing block (102), a handlebar rod (103), a protective rod (104), a folding assembly (105), a steering shaft (106), and a throttle turning device (107); the handlebar fixing block (102) is installed on the top of the handlebar tube (101); the handlebar rod (103) and the protective rod (104) are fixed on both sides of the handlebar fixing block (102); and the throttle turning device (107) is installed on the handlebar rod (103); the bottom of the handlebar tube (101) is connected to the folding assembly (105), and the folding assembly (105) is connected to the steering shaft (106).

3. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The steering linkage assembly (2) comprises a left steering arm (201), a right steering arm (202), a hexagonal linkage assembly (203), a tie rod assembly (204), and a steering connection block (205); the left steering arm (201) is fixedly connected to the left end of the front suspension cantilever (301), the right steering arm (202) is fixedly connected to the right end of the front suspension cantilever (301), a hexagonal linkage assembly (203) is installed between the left steering arm (201) and the right steering arm (202), fisheye bearings are installed at both ends of the hexagonal linkage assembly (203), one end of the right steering arm (202) is also connected to the steering connection block (205) via the tie rod assembly (204), fisheye bearings are provided at both ends of the tie rod assembly (204), and the steering connection block (205) is connected to the steering shaft (106); the fisheye bearing is an external threaded self-lubricating rod end joint bearing.

4. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The front suspension assembly (3) comprises a front suspension cantilever (301), a front suspension upper plate (302), a front suspension lower plate (303), a rubber pier (304), left and right kingpin shaft assemblies (305), a shock absorbing connecting rod (306), a shock absorber (307), and a front suspension steering block (308); the middle portion of the front suspension cantilever (301) is connected to the front suspension lower plate (303) via bolts, and a front suspension upper plate (302) is provided above the front suspension lower plate (303). 2), the front suspension upper plate (302) and the front suspension lower plate (303) are provided with fixing notches for rubber piers (304), the rubber piers (304) installed between the notches are fixedly connected to the front suspension upper plate (302) and the front suspension lower plate (303) via bolts, a steering block (308) is installed above the front end of the front suspension upper plate (302), and the rear end of the front suspension cantilever (301) is connected to a shock absorbing link (306) and a shock absorber (307).

5. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The rear suspension assembly (4) comprises a rear suspension cantilever (401), a rear suspension base plate 1 (402), a rear suspension base plate 2 (403), a rear suspension base plate 3 (404), a rear suspension upper hinge seat (405), and a spring shock absorber (406); the front end of the rear suspension cantilever (401) is connected to the rear suspension base plate 1 (402) via bolts; the rear suspension cantilever (401) and the rear suspension base plate 1 (402) are provided with a rubber pier (304) for fixing The rubber pier (304) is fixedly connected to the rear suspension cantilever (401) and the rear suspension base plate 1 (402) through bolts; the rear end of the rear suspension base plate 2 (403) is spliced ​​with the rear suspension base plate 3 (404); the bottom of the rear suspension base plate 1 (402) is installed with a rear suspension upper hinge seat (405); and a spring shock absorber (406) is installed between the rear suspension upper hinge seat (405) and the rear suspension cantilever (401).

6. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The main frame assembly (5) comprises a main frame (501), an anti-skid plate (502), a battery box fixing frame (503), and a sub-frame support frame (504); the anti-skid plate (502) is installed at the bottom of the main frame (501), the battery box fixing frame (503) is installed inside the main frame (501), and the sub-frame support frames (504) are installed on both sides of the rear end of the main frame (501).

7. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The seat assembly (7) comprises a seat base (701), a seat rod (702), and a seat (703); the seat base (701) is fixed to the sub-frame assembly (6); the bottom of the seat rod (702) is inserted into the seat base (701) and fixed by hand-tightening bolts; and the seat (703) is mounted on the top of the seat rod (702).

8. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The wheel assembly (9) comprises a wheel (901), a wheel hub motor (902), and a brake disc (903); the wheel hub motor (902) is mounted on the inner side of the wheel (901), and the brake disc (903) is mounted on the outer side of the shaft of the wheel hub motor (902); the wheel hub motor (902) is connected to a master controller of the battery box assembly (8).

9. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The handlebar steering assembly (1), the steering link assembly (2), the front suspension assembly (3), the rear suspension assembly (4), the main frame assembly (5), and the sub-frame assembly (6) are made of high-strength aluminum alloy.

10. The all-terrain four-wheel vehicle according to claim 1, characterized in that: The battery box assembly (8) comprises a battery box (801), a ternary lithium battery (802), a master controller (803), and a top pedal (804); through holes are provided on the front and rear walls of the battery box (801), and the ternary lithium battery (802) is installed inside; the front of the ternary lithium battery (802) is connected to the master controller (803), and the master controller (803) is connected to a wheel hub motor drive control line and a throttle control line on the steering assembly.

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